L293D Motor Driver Module – Specifications

General

Driver Type: Quad Half-Bridge / Dual H-Bridge
Motor Channels: 2 DC motors or 1 stepper motor
Driver IC: L293D (16-pin DIP)

Electrical Specs

• Motor Supply Voltage (Vs): 4.5 V to 36 V
• Logic Voltage (Vss): 5 V
• Output Current:
• Continuous: 600 mA per channel
• Peak: 1.2 A per channel (short duration)

• Output Voltage Drop: ~1.2–2.0 V (varies with load)

Control & Inputs

• Input Pins: IN1, IN2, IN3, IN4 (H-bridge control)
• Enable Pins: EN1, EN2 (used for PWM speed control)
• PWM Support: Yes (via enable pins)
• Logic Level: TTL compatible (5 V)

Protection Features

• Built-in Flyback Diodes (protects against motor back EMF)
• Thermal Shutdown: Yes (internal)

Module Features (common breakout board)

• Onboard 5 V Regulator: Yes (if motor voltage ≥ 6 V)
• Status LEDs: Often included for direction/enabling
• Screw Terminals: For motor & power connections
• Dimensions: ~40 mm × 35 mm (varies by design)

Supported Loads

• DC Motors: Forward / Reverse / PWM speed
• Stepper Motors: Unipolar or bipolar (limited current)
• Small robotics applications

Applications

• Small robot cars
• Toy motors
• Basic automation
• Simple stepper control (low current)